Need Help TNR trap shy cats

I have been caring for 2 feral cats in my yard for some time now. The older male is fixed, there is a 1.75 year old female who had kittens(that we'd just adopted out) and so we're trying to trap her.

The issue is that an unfixed male cat has suddenly come around and I'd seen him copulating with her. Also, the older fixed male cat has been territorial when the unfixed male is around.

Therefore, I'm looking for any ideas, strategies, etc. which might help me to trap both unfixed cats(the new comer male and the female who had kittens).

I have 2 traps, I have a contained yard, and any ideas are helpful.